Telecast of the ceremony

The major awards are presented at a live televised ceremony, most commonly in February or March following the relevant calendar year, and six weeks after the announcement of the nominees. It is the culmination of the film awards season, which usually begins during November or December of the previous year. This is an elaborate extravaganza, with the invited guests walking up the red carpet in the creations of the most prominent fashion designers of the day. Black tie dress is the most common outfit for men, although fashion may dictate not wearing a bow-tie, and musical performers sometimes do not adhere to this. (The artists who recorded the nominees for Best Original Song quite often perform those songs live at the awards ceremony, and the fact that they are performing is often used to promote the television broadcast.)
The Academy Awards is televised live across the United States (excluding Alaska and Hawaii), Canada, the United Kingdom, and gathers millions of viewers elsewhere throughout the world. The 2007 ceremony was watched by more than 40 million Americans. Other awards ceremonies (such as the Emmys, Golden Globes, and Grammys) are broadcast live in the East Coast but are on tape delay in the West Coast and might not air on the same day outside North America (if the awards are even televised). The Academy has for several years claimed that the award show has up to a billion viewers internationally, but this has so far not been confirmed by any independent sources. The usual extension of this claim is that only the Super Bowl, Olympics Opening Ceremonies, and FIFA World Cup Final draw higher viewership.
The Awards show was first televised on NBC in 1953. NBC continued to broadcast the event until 1960 when the ABC Network took over, televising the festivities through 1970, after which NBC resumed the broadcasts. ABC once again took over broadcast duties in 1976; it is under contract to do so through the year 2014.
After more than sixty years of being held in late March or early April, the ceremonies were moved up to late February or early March starting in 2004 to help disrupt and shorten the intense lobbying and ad campaigns associated with Oscar season in the film industry. Another reason was because of the growing TV ratings success of the NCAA Men's Division I Basketball Championship, which would cut into the Academy Awards audience. The earlier date is also to the advantage of ABC, as it now usually occurs during the highly profitable and important February sweeps period. (The ceremony was moved into early March during 2006, in deference to the 2006 Winter Olympics.) Advertising is somewhat restricted, however, as traditionally no movie studios or competitors of official Academy Award sponsors may advertise during the telecast. The Awards show holds the distinction of having won the most Emmys in history, with 38 wins and 167 nominations.
On March 30, 1981, the awards ceremony was postponed for one day after the shooting of President Ronald Reagan and others in Washington, D.C.
Since 2002, celebrities have been seen arriving at the Academy Awards in hybrid vehicles; during the telecast of the 79th Academy Awards in 2007, Leonardo DiCaprio and former vice president Al Gore announced that ecologically intelligent practices had been integrated into the planning and execution of the Oscar presentation and several related events.